66 



Studies on Solution. 



CHROMIUM NITRATE IN WATER. 



Seventeen solutions were prepared, varying in concentration from 

 c = 2.0 to 0.10. The general character of the absorption for the nitrate 

 is the same as that of the chromium-chloride solutions, and therefore 



TABLE 27. Chromium Nitrate in Water (Fig. 25). 



the absorption curves have not been plotted. The A c curves for 

 684/i/x, 704/i/i, and 724/x/z show that A decreases slightly with dilution. 

 This same decrease in A with dilution for wave-lengths on the red edge 

 of the green chromium absorption band is shown by Plate 58-A of the 

 paper by Jones and Anderson. 



